Car-brake



(No Model.) 2 Sheets-Sheet 1.

G. G. OLDFIELD.

CAR BRAKE.

No. 386,342. Patented July 17, 1888.

WITNESSES 71 1471 mm fmevy.

(No Model.) I 2 Sheets-Sheet 2 G. G. OLDFIELD.

GAR BRAKE.

No. 386,342. Patented July 17, 1888.

INV'EJV'TUR Lithognphan Wnhington u. c.

UNITED STATES PATENT OFFICE.

GIDEON G. OLDFIELD, OF FERENBAUGH, NEWV YORK.

CAR-BRAKE.

EPECIPICATION forming part of Letters Patent No. 386,342. dated July 17, 1888.

Application filed April 7, 1888. Serial No. 169,975.

To all whom it may concern:

Be it known that I, GIDEON G. OLDFIELD, a citizen of the United States of America, residing at Ferenbaugh. in the county of Steuben and State of New York, have invented certain new and useful Improvements in Oar-Brakes, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention pertains to certain new and useful improvements in car-brakes, the same being operated by a piston-connection with the engine-boiler, or by hand, as desired.

The object of the invention is the provision of a car-brake comprising but few parts and capable of readily and easily chocking and braking the wheels; and theinvention comprises advantages in points of simplicity, durability,and general etficiency,substantially as hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan View of my invention. Fig. 2 is avertical longitudinal sectional view thereof, and Figs. 3 and 4 are detail views.

Referring to the drawings, A indicates the bottom frame-work of an ordinary car, beneath which is passed a longitudinal rod, c,which at each end is provided with an eye or aperture for connection thereto of a screw-swivel, a,whereby connection is established between the longitudinal rods of the cars composing the train. One of the hooks of the swivel is screwthreaded so as to permit ofits adj ustment at the desired point, according to the width it is de sired to maintain between the cars. This rod a is encircled by two coil-springs, a (H, which bear at their ends against collars a a on the rod (1, and against apertu red plates a depend ing from a cross-bar of the frame-work A.

B B are two coil'springs encircling the bar a atits central portion, and bear against a central collar, b, at their opposite inner ends, while against theirouter ends bear sleeves or thimbles b b, as shown.

O is a lever fnlcrumed between cross-bars b b" of the frame-work A, and to the upper end of this lever are connected the inner ends of chains b b", the outer ends of which are con nected to U-shaped rods b N, attached to the sleeves or thimbles I) Z).

(No model.)

jection, e, attached to across-bar of the frame or truck D, and to its upper end is connected one end of a chain or rod, 6, attached at its outer end to a cross-head, e",while to thelower end of this lever E is connected the curved portion of a rod or chain, c, the outer ends of which are connected to the brake d.

To the cross-head e are connected the ends of rods or chains 6 e, which are also connected at their outer ends to the other brake, d. Thus it will be seen by pulling on the crosshead 6 the same will effect the pulling for ward of the upper end of the lever E, causing the brake d to apply to the wheels adjoining the same, and by reason of the rods or chains 6 the brake (2 will be brought against its wheels.

F F are upper and lower divergent chains, connected, respectively, to the upper and lower ends of the lever (J, and at their outer meeting points are connected to the crossheads 6 as shown.

In practice, by pulling in either direction on the rod a, the same will,through the agency of the chains 1) b,effect the tilting of the upper end of the lever O, which will eifect the pulling in opposite directions of the diagonallyopposite chains of the series FF, thus pulling the cross-heads e e toward each other and applying the brakes to the wheels.

It is obvious that my device can be operated in any desired manner, that which Igenerally employ having a piston-connection, (not shown,) having a lever-.valve for permitting the steam to pass from the boiler thereinto and to cause the movement in the desired direction of the brake-rod a.

vertical spindles G G, having handwheels 9 attached to their upper ends for operating the brakes by hand when necessary, the lower ends ofsaid spindles having connected thereto chains 9' g passed around the brake-rod ajust in rear of the collars a a I also provide The object of the springs on the brake-rod a is to prevent thejerking usually experienced in applying the brakes and to provide for the easy and ready application thereof, and also I to restore the rod a to its normal position when the brakes are released.

The rods or chains 6 e have adjustable connections with their respective parts, so as to compensate for wear of the brakes.

I claim as my invention 1. As an improvement in car-brakes of the class herein described, the brake-rod having the springs encircling the same, the central vertically-disposed lever, the chains connected to the upper and lower ends thereof, and the brakes, to the cross-heads of which said chains are connected, substantially as shown and described.

2. As an improvement in carbrakes, the brake-rod having the central vertically-disposed coil-springs, the sleeves or thimbles, the chains connected t-hereto,the central lever,and

the brakes having head-bars connected to said lever, substantially as shown and described.

3. As an improvement in car-brakes of the class herein described, the vertical lever E, the rods or chains connected to the upper and lower ends thereof, the cross-heads,the brakes,

GIDEON G. OLDFIELD.

Witnesses:

GEO. R. BROWN, J OHN H. WAY. 

